55A Evaluation, Planning, and Donor Concerns with Follicular Unit
Excision

doi:10.1055/b-0042-191749

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Unger, Robin et al.: 2023 Hair Transplantation DOI: 10.1055/b-0042-191749

Section V Follicular Unit Extraction Procedure

55A Evaluation, Planning, and Donor Concerns with Follicular Unit Excision

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Editors: Unger, Robin; Shapiro, Ronald

Authors: Gupta, Aditya K.; McDonald, Adriane; Noreldin, Ahmed Adel; Bauman, Alan J.; Juliano, Alessandra; Abbasi, Ali; Dua, Aman; Christiano, Angela M.; O’Mara, Angela; Yong, Angeline Anning; Tosti, Antonella; Ruston, Antonio; Nusbaum, Aron G.; Poswal, Arvind; Shahmalak, Asim; Alp, Bayramoğlu; Nusbaum, Bernard P.; Farjo, Bessam; Feriduni, Bijan; Wolf, Bradley R.; Puig, Carlos J.; Varona, Christopher M.; Albertini, Conradin von; Ziering, Craig; Pathomvanich, Damkerng; Josephitis, David; Perez-Meza, David; Mangubat, E. Antonio; Ball, Edward A. M.; Poblet, Enrique; Eisenberg, Eric L.; Wang, Etienne C. E.; Rinaldi, Fabio; Jimenez, Francisco; Krenitsky, Gabriel H.; Williams, Greg; Abaci, Hasan Erbil; Radwanski, Henrique N.; Park, Jae Hyun; Hernandez, Irene; Harris, James A.; Vogel, James E.; Devroye, Jean; Irvine, Jeff; Epstein, Jeffrey; Cooley, Jerry E.; Shapiro, Jerry; Wong, Jerry; Kim, Jino; Jackow, Joanna; Cole, John; Dua, Kapil; Washenik, Ken; Williams, Ken; Erdogan, Koray; Sicco, Kristen Lo; Yagyu, Kuniyoshi; Bloch, Leila David; Santos, Leopoldo Duailibe; Avila, Lorena; Pontes, Luciana Takata; Khanna, Manoj; Avram, Marc R.; Pitchon, Marcelo; Crisóstomo, Márcio; Barusco, Marco N.; Sanseverino, Maria Angélica Muricy; Schambach, Marie A.; Unger, Mark; Speranzini, Mauro; Cole, Megan; Mayer, Melvin L.; Beehner, Michael L.; Neff, Mike; Mohmand, Mohammad H.; Ahmad, Muhammad; Rogers, Nicole E.; Large, Nicole; Farjo, Nilofer; Otberg, Nina; Desai, Nirav V.; Mohebi, Parsa; Frechet, Patrick; Mwamba, Patrick; Shapiro, Paul; Rose, Paul T.; Tesauro, Piero; Kinler, Rae Lynne P.; Rabbani, Ramin; Konior, Raymond J.; Kothottil, Renu; Lemos, Ricardo Gomes de; Mejia, Ricardo; Shiell, Richard C.; Finney, Robert; True, Robert H; Dorin, Robert J.; Haber, Robert S.; Unger, Robin; Shapiro, Ronald; Adajar, Ruel A.; Knudsen, Russell G.; Nadimi, Sahar; Lam, Samuel M.; Vasa, Sanjeev; Tovar, Sara Lea Salas; MD, Sara Wasserbauer; Boden, Scott A.; Keene, Sharon A.; Abbasi, Sheida; Kabaker, Sheldon S.; Kobren, Spencer David; Gabel, Steven; Hwang, Sungjoo “Tommy”; Nakatsui, Thomas C.; Carman, Timothy; Lardner, Tina; Elliott, Vance W.; Mysore, Venkataram; Unger, Walter P.; Rassman, William; Doucet, Yanne S.; MD, Young-Ran Lee; Guo, Zongyou

Title: Hair Transplantation

Print ISBN: 9781626236936; Online ISBN: 9781684202737; Book DOI: 10.1055/b000000335

6. Edition © 2023 Thieme. All rights reserved.
Thieme Medical Publishers, Inc., New York

Subjects: Plastic, Reconstructive and Cosmetic Surgery;Dermatology

Thieme Clinical Collections (English Language)

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References
Supplementary Material

Paul T. Rose

Summary

Before endeavoring to undertake a follicular unit excision (FUE) procedure, the surgeon must be aware of how to properly evaluate and map out the donor area for harvesting. Various relevant concerns are also reviewed in this chapter. More specifically, this chapter focuses on developing an understanding of the extent of the safe area, the number of grafts available that can reasonably be harvested, and ways to avoid potential problems in the donor area. Also discussed is the geometry of hair angulation as it relates to FUE as well as the mathematics of scar formation with the FUE technique. This information should lead to more precise and efficient harvesting. This chapter also includes brief discussions of problems such as transection, thinning of the donor area, hypopigmentation, altered hair angles, and methods to avoid and/or manage these possible issues

Key words

follicular unit excision - hair angle - safe donor harvesting zone - transections - FUE scars - donor area - donor depletion

1 Rassman WR, Bernstein RM, McClellan R, Jones R, Worton E, Uyttendaele H. Follicular unit extraction: minimally invasive surgery for hair transplantation.. Dermatol Surg 2002; 28 (8) 720-728 PubMed (PMID: 12174065)

PubMed Google Scholar

2 Rose PT. Internal angle of hair growth versus the exit angle as it relates to FUE/FIT. ISHRS Annual meeting, October 20–24, Boston, MA; 2010

3 Umar S. Body hair transplant by follicular unit extraction: my experience with 122 patients.. Aesthet Surg J 2016; 36 (10) 1101-1110 PubMed (PMID: 27241361)

PubMed Google Scholar

4 Unger W, Solish N, Giguere D et al. Delineating the “safe donor” area for hair transplanting. Am J Cosmet Surg 1994; 11: 239-243 (PMID: NOT_FOUND&semi;INVALID_JOURNAL)

Google Scholar

5 Unger W. The donor site. In: Unger W, ed. Hair Transplantation. 3rd ed. New York, NY: Marcel Dekker Inc; 1995:183–214

6 Devroye J. An overview of the donor area: basic principles. In: Unger W, Unger R, Shapiro R, Unger M, eds. Hair Transplantation. 5th ed. New York, NY: Informa; 2011:257–259

7 Cole J, Devroye J. A calculated look at the donor area.. Hair Transpl Forum Int 2001; 11 (5) 150 (PMID: NOT_FOUND&semi;INVALID_JOURNAL)

Google Scholar

8 Marritt E. Editorial: the end of the follicular unit density debate. J Dermatol Surg 1999; (PMID: NOT_FOUND)

PubMed Google Scholar

9 Rassman W. Follicular Unit Extraction, Evolution of a technology. 24th World Congress of ISHRS, September 28–October 2, Las Vegas, NV, 2016

10 Zontos G, Rose PT, Nikiforidis G. A mathematical proof of how the outgrowth angle of hair follicles influences the injury to the donor area in FUE harvesting.. Dermatol Surg 2014; 40 (10) 1147-1150 PubMed (PMID: 25255277)

PubMed Google Scholar

11 Harris JA. Follicular unit extraction.. Facial Plast Surg Clin North Am 2013; 21 (3) 375-384 PubMed (PMID: 24017979)

PubMed Google Scholar

12 Wolf B. Occipital area thinning caused by FUE. ISHRS 24th World Congress, September 28–October 1, Las Vegas NV, 2016

13 Zontos G, Williams K, Nikifordis G. Minimizing injury to the donor area in follicular unit extraction (FUE) harvesting. J Cosmet Dermatol 2017; 16 (1) 61-69 (PMID: 24017979)

PubMed Google Scholar

14 Badylak SF. Extracellular matrix as a scaffold for tissue engineering in veterinary medicine; applications to soft tissue healing. Clin Tech Equine Pract 2004; 3: 173-181 (PMID: NOT_FOUND&semi;INVALID_JOURNAL)

Google Scholar

15 Cooley JE. Bio-enhanced hair restoration.. Hair Transplant Forum Intl 2014; 24 (4) 121-,128 (PMID: NOT_FOUND&semi;INVALID_JOURNAL)

Google Scholar

16 Bernstein RM, Wolfeld MB. Robotic follicular unit graft selection.. Dermatol Surg 2016; 42 (6) 710-714 PubMed (PMID: 27176871)

PubMed Google Scholar

17 Kim DY, Choi JP, Hwang YJ, Kim HS. Hidden transection of follicular unit extraction in donor site.. Dermatol Surg 2016; 42 (4) 485-488 PubMed (PMID: 27035500)

PubMed Google Scholar

18 Williams G. Report on the British Association of Hair Restoration Surgery Meeting to Establish “Common Practice” for FUE.. Hair Transpl Forum Intl 2016; 26 (1) 11-13 (PMID: NOT_FOUND&semi;INVALID_JOURNAL)

Google Scholar

19 Harris J. Follicular unit extraction with the SAFE system: a dull dissection tip FUE device. in:Lam, S, ed. Hair Transplant 360. New Delhi: Jaypee Brothers Medical Publishing; 2014:73–86

20 Rose PT, Cole J. Follicular Isolation Technique (FIT). Aegean Masters Meeting, Athens, Greece, June 5–7, 2003

21 Devroye J. Effects of FUE transection on Graft Growth. ISHRS World Congress, September 30–October 2, Las Vegas, NV, 2016